Morphology and Mechanical Characterization of ABS Foamed by Microcellular Injection Molding

Gómez-Monterde, J.; Schulte, Manfred; Ilijevic, Stefan; Hain, J.; Arencón, D.; Sánchez‐Soto, Miguel; Maspoch, M. Ll.

doi:10.1016/j.proeng.2015.12.462

Cited by 12 publications

(8 citation statements)

References 17 publications

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“…It has to be mentioned that engineering plastics, which are high performance thermoplastic materials with better mechanical and thermal properties than commodity plastics, represent a much less studied class of materials for microcellular injection molding. In 2015, Gómez-Monterde et al [17] conducted the morphology characterization of ABS foams that were obtained by injection molding, as well as an analysis of the effects of gas content and density reduction on the mechanical behavior. They produced structural foams with a solid skin and a foamed core divided in two parts: a nucleus, with bigger cells and irregular cell distribution due to a higher expansion rate and bubble coalescence, and a microcellular zone between the nucleus and the skin layer, with more homogenous cell structure.…”

Section: Introductionmentioning

confidence: 99%

Lightweight High-Performance Polymer Composite for Automotive Applications

Volpe

Lanzillo²,

Affinita³

et al. 2019

Polymers

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The automotive industry needs to produce plastic products with high dimensional accuracy and reduced weight, and this need drives the research toward less conventional industrial processes. The material that was adopted in this work is a glass-fiber-reinforced polyamide 66 (PA66), a material of great interest for the automotive industry because of its excellent properties, although being limited in application because of its relatively high cost. In order to reduce the cost of the produced parts, still preserving the main properties of the material, the possibility of applying microcellular injection molding process was explored in this work. In particular, the influence of the main processing parameters on morphology and performance of PA66 + 30% glass-fiber foamed parts was investigated. An analysis of variance (ANOVA) was employed to identify the significant factors that influence the morphology of the molded parts. According to ANOVA results, in order to obtain homogeneous foamed parts with good mechanical properties, an injection temperature of 300 °C, a high gas injection pressure, and a large thickness of the parts should be adopted.

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Section: Introductionmentioning

confidence: 99%

Lightweight High-Performance Polymer Composite for Automotive Applications

Volpe

Lanzillo²,

Affinita³

et al. 2019

Polymers

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“…Gómez-Monterde et al [ 80 ] investigated the relationship between cell morphology and tensile properties of microcellular injection moulded cylindrical bars under 10% and 17% weight reductions. They found that there were no significant changes on cell morphology including cell size, cell density, and solid skin between the two weight reduction bars.…”

Section: Methods For Improving Mechanical Propertiesmentioning

confidence: 99%

“…Modflow and Moldex 3D have been used to predict the morphology of the foam parts, injection cycle time, and to identify a set of optimal injection moulding parameters for a specific material. Gómez et al [ 80 ] simulated the MuCell ® process of cylindrical bars ( Figure 13 ) with Moldex 3D software and compared the numerical results with experimental ones. Similar results were obtained.…”

Section: Simulation Of the Mucell ® Processmentioning

confidence: 99%

A Review on Microcellular Injection Moulding

et al. 2021

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Microcellular injection moulding (MuCell®) is a polymer processing technology that uses a supercritical fluid inert gas, CO2 or N2, to produce light-weight products. Due to environmental pressures and the requirement of light-weight parts with good mechanical properties, this technology recently gained significant attention. However, poor surface appearance and limited mechanical properties still prevent the wide applications of this technique. This paper reviews the microcellular injection moulding process, main characteristics of the process, bubble nucleation and growth, and major recent developments in the field. Strategies to improve both the surface quality and mechanical properties are discussed in detail as well as the relationships between processing parameters, morphology, and surface and mechanical properties. Modelling approaches to simulate microcellular injection moulding and the mathematical models behind Moldex 3D and Moldflow, the two most commonly used software tools by industry and academia, are reviewed, and the main limitations are highlighted. Finally, future research perspectives to further develop this technology are also discussed.

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“…There are some researches about the preparation of microcellular plastics by supercritical gas, such as microcellular polystyrene, 2,6,7 polyurethane, 8 cross-linked polyethylene, 9 polypropylene, 10 polycarbonate/poly(lactic acid) blend, 11 polyurethane/polylactic acid, 12 poly(ether ether ketone) and poly(ether imide) blend 13 and polypropylene/polystyrene blend 14 by ScCO 2 . And microcellular polypropylene, 15 polyethylene terephthalate glycol, 16 poly(phenylene sulfide), 17 polystyren, 18 ABS, 19 polypropylene/high-density polyethylene, polypropylene/low-density polyethylene, and poly(lactic acid)/poly(3-hydroxybutyrate-co-3-hydroxy-valerate) blends, 20 poly (lactic acid)/poly(ε-caprolactone) blends, 21 and acrilonitrile–butadiene–styrene (ABS) 22 foams were prepared by ScN 2 .…”

Section: Introductionmentioning

confidence: 99%

Morphology and properties of thin-walled microcellular polycarbonate/acrylonitrile–butadiene–styrene blend foam

Yang

Liu³

2019

Journal of Cellular Plastics

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Microcellular plastics not only have excellent performance, but also can form thin-walled parts. In the paper, the thin-walled microcellular parts (notebook computershell) made of polycarbonate/acrylonitrile–butadiene–styrene blends (PC/ABS) were prepared by foam injection molding with supercritical nitrogen. The morphologies were observed by optical microscope, scanning electron microscope, and optical profiler. The properties (macro-density, impact toughness, thermal conductivity) of the samples were further studied. The results showed that the average cell diameter of the PC/ABS foam was 0.401 µm. The cell density reached 3.25 × 1012 cell/cm3. Compared with unfoamed part, the macro-density of the microcellular part was reduced by 10.9%. Impact toughness of the polycarbonate/acrylonitrile-butadiene-styrene blend (PC/ABS) foam reached 19.9 kJ/m, approximately 2.7 times as great as that of unfoamed part. This may be ascribed that microcellular structure could absorb impact energy resulting in the improvement of toughness. The microcellular structure could also reduce thermal conductivity of the PC/ABS foam. In short, the thin-walled microcellular PC/ABS part with light weight and good toughness could be formed by injection molding with supercritical nitrogen.

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Morphology and Mechanical Characterization of ABS Foamed by Microcellular Injection Molding

Cited by 12 publications

References 17 publications

Lightweight High-Performance Polymer Composite for Automotive Applications

Lightweight High-Performance Polymer Composite for Automotive Applications

A Review on Microcellular Injection Moulding

Morphology and properties of thin-walled microcellular polycarbonate/acrylonitrile–butadiene–styrene blend foam

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